题目内容

【题目】He ________ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it.

A. wouldn't B. shouldn't

C. couldn't D. mustn't

【答案】C

【解析】

试题分析:考查情态动词辨析。句意:尽管他想睡,但是却睡不着,当时他一直在拼命想着一件事,一直到想清楚为止。此处couldn't意为 “不能”,符合题意。

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